I occasionally have a list of contacts outside of Civi but with CiviIDs that I want to search for in Civi, but aren't grouped in any easily accessible way (no common event, activity, tag, group, etc. to search for). If it were a longer list, I'd do an update import on the contacts (with no actual changes) adding them to a new temporary group. But if I have fewer than say 10, that seems like a lot of steps.
I thought, "A regex search builder would work." But when I put
into the regex search, I get a "Please enter a valid value" error. I seem to get a valid search when using only numeric text ("64") without any regex operators, which kind of defeats the entire purpose of regex.
I'm not a big regex user, so I could believe I've screwed up the regex. Anything I'm doing wrong here?